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1

The effect of plant growth regulators on the incidence and severity of potato diseases

100%
Cwalina-Ambroziak B., Glosek-Sobieraj M., Kowalska E.
Polish Journal of Natural Sciences
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2015
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tom 30
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nr 1
Four potato cultivars were grown: Volumia, Irga, Satina and Sylvana. Potato plants were sprayed three times with the growth biostimulator Asahi SL and growth regulators Bio-Algeen S-90 and Kelpak SL. During the growing season, the severity of late blight and early blight was evaluated. After five-month storage, the incidence of common scab, black scurf, soft rot, late blight and dry rot was determined on tubers. Fungi were isolated from potato tubers and were cultured on PDA medium. The severity of late blight was reduced in the treatments with growth regulators Bio-Algeen S-90 and Kelpak SL, and the incidence of early blight was reduced in the above treatments and in that with the biostimulator Asahi SL. Satina was the healthiest cultivar. Weaker symptoms of late blight and dry rot were observed on potato tubers harvested from plants treated with the analyzed growth regulators and biostimulator. Colletotrichum coccodes was the predominant pathogen colonizing potato tubers.
2
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The influence of biostimulants on the microelement content of tubers in selected potato cultivars

100%
Glosek-Sobieraj M., Cwalina-Ambroziak B., Wierzbowska J., Waskiewicz A.
Acta Scientiarum Polonorum. Hortorum Cultus
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2018
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tom 17
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nr 6
The aim of this study was to determine the influence of biostimulants on the content of selected microelements in the skin and flesh of potato tubers. Five potato cultivars were grown: Irga, Satina (with cream- and yellow-colored flesh), Valfi, Blaue St. Galler (with purple-colored flesh) and Highland Burgundy Red - HB Red (with red-colored flesh). Potatoes were treated with the following biostimulants: Asahi SL, Bio-Algeen S 90, Kelpak SL and Trifender WP. Control plants were not treated with biostimulants. Samples of potato tubers were analyzed immediately after the harvest and after 5 months of storage (4°C). The highest content of micronutrients in the skin and flesh of potato tubers was determined at harvest in the driest 2015 year. In all years of the experiment, micronutrient concentrations were lower in the flesh than in the skin of potato tubers, and the greatest differences were noted in the content of Fe. The concentrations of Zn, Mn and Fe in the skin and flesh of potato tubers increased as a response to the BioAlgeen S 90 biostimulant, and the content of Fe was also higher in the skin of potatoes treated with Kelpak SL. In general, the skin and flesh of potatoes cvs. Valfi, Blaue St. Galler and HB Red were more abundant in microelements than cvs. Irga and Satina potatoes. Content of Zn and Mn increased and the content of Cu and Fe decreased (excluding the first year of the study) in the skin and flesh of stored potatoes. The skin and flesh of stored potato tubers treated with biostimulants were characterized by Mn concentrations that were higher or similar to those recorded in the control treatment (excluding the skin of potatoes treated with Bio-Algeen S 90) and a smaller decrease in Cu content.
3

The influence of biostimulants on the content of P, K, Ca, Mg, and Na in the skin and flesh of potato tubers

100%
Glosek-Sobieraj M., Cwalina-Ambroziak B., Wierzbowska J., Waskiewicz A.
Polish Journal of Environmental Studies
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2019
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tom 28
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nr 3
Potato cultivars Blaue St. Galler, Valfi, HB Red (with purple- and red-colored flesh), Irga, and Satina (with cream- and yellow-colored flesh) were treated with Trifender WP, Asahi SL, Bio-Algeen S90, and Kelpak SL. The influence of biostimulants on the P, K, Ca, Mg, and Na contents of potato skin and flesh was determined immediately after harvest and after storage. The highest content of Ca in the flesh and skin and the highest content of K in the skin were noted in potatoes treated with Kelpak SL. Potassium content was highest in the flesh of potatoes treated with Trifender WP. Phosphorus content was highest in the skin, whereas Mg content was highest in the flesh of potatoes treated with Bio-Algeen S90. The flesh and skin of cvs. Blaue St. Galler, Valfi, and HB Red were more abundant in macroelements. An increase in the contents of Na and P, and a decrease in the contents of K, Ca, and Mg were observed in the tubers of stored potatoes. The greatest increase in the content of P and Na and the smallest decrease in the concentration of Ca were noted in the flesh and skin of cv. Satina.
4
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The effect of biological and chemical control agents on the health status of the very early potato cultivar Rosara

100%
Cwalina-Ambroziak B., Damszel M. M., Glosek-Sobieraj M.
Journal of Plant Protection Research
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2015
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tom 55
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nr 4
The external appearance and quality of table potatoes are determined, among other factors, by the health status of the plants during the growing season. Chemical control methods are often combined with biocontrol agents to effectively fight potato pathogens. Potatoes of the very early cultivar Rosara were grown in experimental plots. The plots were located in Tomaszkowo (NE Poland, 2007–2009). The experiment involved the following treatments: 1) biological control − mycorrhizal Glomus spp. inoculum was applied to the roots, − tubers were dressed and plants were sprayed with Polyversum three times during the growing season, 2) chemical control – at two-week intervals, plants were sprayed with the following fungicides: Infinito 687.5 SC and Tanos 50 WG, Valbon 72 WG and Tanos 50 WG. In the control treatment, potato plants were not protected against pathogens. During the growing season, the severity of late blight and early blight was evaluated on a nine-point scale. The composition of fungal communities colonising potato stems was analysed. The fungistatic properties of the fungicides used in the field experiment were evaluated in an in vitro test. The symptoms of infections caused by Phytophthora infestans and Alternaria spp. were significantly reduced in the treatment which used the integrated chemical and biological control. The least diverse fungal community was isolated from fungicide-treated plants. In the in vitro test, fungicides at all analysed concentrations inhibited the linear mycelial growth of selected pathogens.
5
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The impact of Trifender WP on the content of chlorogenic acids in potato plants infected by Phytophthora infestans (Mont.) de Bar

100%
Glosek-Sobieraj M., Cwalina-Ambroziak B., Waskiewicz A., Kubiaczyk K.
Acta Scientiarum Polonorum. Hortorum Cultus
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2019
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tom 18
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nr 2
Five potato cultivars were grown in a micro-plot field experiment (under conditions of natural infection by pathogens). In experimental treatments, potatoes were treated with Trifender WP, whereas control plants were not treated with growth regulators. A greenhouse experiment, conducted simultaneously, involved three treatments: 1. control (no biostimulant treatment, no inoculation), 2. inoculation (potato plants inoculated with P. infestans), 3. Trifender WP+inoculation (soil and foliar application of Trifender WP followed by inoculation with the pathogen 2 days after the last treatment). The research material was potato petioles, in which changes in the concentration of analyzed chlorogenic acids were determined using the Waters Acquity UPLC technique. In comparison with the control treatment, higher concentrations of the 5-caffeoylquinic acid (5-CQA), 4-caffeoylquinic acid (4-CQA) and 3-caffeoylquinic acid (3-CQA) were found in potatoes treated with Trifender WP, and in cultivars with blue-purple and red-colored flesh than in those with yellow and cream-colored flesh (field experiment). In the greenhouse experiment, the content of individual chlorogenic acids increased in the petioles of potatoes inoculated with P. infestans and inoculated with the pathogen after the application of Trifender WP, compared with the control treatment.
6

Phytosanitary conditions of winter wheat depending on fertilization with microelements

100%
Cwalina-Ambroziak B., Glosek-Sobieraj M., Stepien A.
Progress in Plant Protection
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2015
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tom 55
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nr 4
7
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Yield and mineral content of edible carrot depending on cultivation and plant protection methods

100%
Wierzbowska J., Cwalina-Ambroziak B., Glosek-Sobieraj M., Sienkiewicz S.
Acta Scientiarum Polonorum. Hortorum Cultus
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2017
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tom 16
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nr 2
The aim of this study has been to determine the effect of cultivation and plant protection on the content of macro- and micronutrients and yield of roots in edible carrots. The cultivation of carrot according to the principles of integrated farming resulted in a higher root mass as well as a higher total and commercial yield than in the ecological cultivation system. The plant protection had a positive effect on the root mass only in ecological cultivation. The content of crude ash in carrot roots ranged from 71.25 to 80.10 g kg-1 d.m. Roots of carrots from the integrated system contained more N-total and potassium than the ones from the ecological system. In general, carrots originating from the integrated system contained more Zn and Mn, while those grown ecologically had more Cu and Ni. After storage, the content of N-total, K, Na, Ca and Mg in carrot roots increased. Meanwhile, the P concentration tended to decrease. The plant protection methods have significant effect on the content of N-total and K and microelements. The content of nitrates (V) was modified more extensively in roots of carrots grown in the integrated system than in ecological system.
8

Content of microelements in tubers of potato treated with biostimulators

88%
Wierzbowska J., Cwalina-Ambroziak B., Bowszys T., Glosek-Sobieraj M., Mackiewicz-Walec E.
Polish Journal of Natural Sciences
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2015
|
tom 30
|
nr 3
Three times every 10-14 days, starting from the BBCH 39 phase, four cultivars of edible potatoes were treated with the following bio-stimulants: Asahi SL, Bio-Algeen S90 or Kelpak SL. The control object was plants potato sprayed with distilled water. The large amount of precipitation in the first year of the research contributed to an increased content of Fe and Mn in the potato tubers. The tubers of potatoes treated with Kelpak SL had the highest content of Zn, Mn, Fe and Cu. The highest content of B was found after the potatoes were sprayed with Asahi SL. Compared to the control plants, Bio-Algeen S90 reduced the content of Zn, Mn, Fe and Cu. The content of microelements in the tubers was significantly dependent on the genotype. The highest concentration of Zn, Mn and B was found in the tubers of the cv. Volumia, the highest concentration of Fe and Cu – in the tubers of the cv. Sylvana, and the highest concentration of Ni – in the tubers of the cv. Satina. The uptake of microelements with the potato harvest depended more on the cultivar, in particular its yield, than on the biostimulators that were used.
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